Improvement in propelling canal-boats



jure the banks. 4the object of my invention; and it consists in.

Ventonar: A. BEIDLER, oF PHILADELPHIA, PEnNsYLvANIA.

Specification forming part of Letters Patent No. 192,429, dated January 2, 1872.

To all whom t may concerti:

Be it known that I, GEORGE A. BEIDLER, Philadelphia., in the county of Philadelphia and in the State of Pennsylvania, have invented certain new and useful Improvements in Boat-Propeller; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon making a part of this specification.

In the navigation of canals or narrow streams the greatest objection to boats propelled with a screw or wheel by steam or other power has been and is that theaction of the screw or wheel upon the water causes the waves produced by such action to wash or otherwise in- To obviate this diiiiculty is two tubes arranged at or through the sides of the stern ofthe boat, each surrounding a screw or wheel taking the water in at the sides and discharging it at the stern; and also in a'modiiication of the same, consisting in two screws or wheels arranged within one tube or cylinder either at the bow orstern of the boat.`

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its `construction and operation, referring to the annexed drawing, in which- Figure 1 isa-vertical section, showing a central tube through the bow ofthe boat, having its outlet at the bottom thereof. Fig. 2 is a plan view, showing two tubes through the stern ofthe boa-t, each surrounding a screw or wheel. Fig. 3 is asimilar view, showing the same arrangement at the bow of the boat; and

Fig. 4 shows two screws or wheels within one Let-ters Patent, is

`have hereunto set my hand this said tube surrounding one screw or wheel and passing inward and downward through the bottom of the boat, discharging the water at this point. The two tubesB B maybe arranged at the stern of the boat, each surrounding a screw or wheel, as shown in Fig.'2.

I am aware that tubes or chutes have been used-in this manner at the stern of a boat to conduct the water to a screw or wheel placed in rear; but in this ease I use a screw or wheel in each tube, thus increasing the power and at the saine time checking the water, because the two streams, or rather the two sets of waves caused by the action of the two screws or wheels meet each other at an angle, thus breaking their respective forces and allowing the water to pass off comparatively unrufied at the stern of the boat. In this case I may use two rudders, E E, one on each side,which would have a tendency to conduct the water toward the center of the canal or stream.

Where one single tube or cylinder is used either at the bow or stern of the boat two wheels or screws, D D', may be used, as shown in Fig. 4, they being set at an angle'to throw the water either inward or outward against the sides ofl the tube or cylinder. In all cases it l will readily be seen that the commotion ofthe water is directed toward the center of the canal or stream, and hence all liability of injuring the banks is obviated.

Having thus fully described my invention, what I claim as new, and desire to secure by l. The arrangement, in the stern of a canal or other boat, `of two tubes, one on each side, open at their front ends, each provided with a propeller and converging to an outlet common to both, substantially as set forth.

2. Two screws or wheels set at an angle in relation to each other within one tube or cylinder, either at the bow or stern ot' a canal or other boa-t, substantially as herein set forth.

In testimony that I claim the foregoing I 27th day of April, 1871.

` G. A. BEIDLER, Witnesses:

A, N. MARR, C. L. EVERT. 

